Improvement in forms for bending wood



l. M. WATERS.

Forms for Bending Wood No.l4l9,084, Patented March 31,1874.

NITED STATES PATENT EEroE.

JABEZ M. WATERS, -OF CINCINNATI, OHIO.

IMPROVEMENT IN FORMS FOR BENDING WOOD.

Specification forming part of Letters Patent No. 149,(}4, dated March 31,1874; application Bled November 3, 1873.

veach portion is bent but once.

The object of my invention is, by the use of a flexible form, to make it possible to bend a piece of wood a second time in the same part which has already been bent once in the ordina-ry way. It is evident that a piece of wood can thus be bent into shapes which could not be obtained by successive bcndings of separate portions.

The flexible form which I have invented consists of parts, as A A A A, Fig. 1, whichl are hinged, jointed, or linked together in any convenient manner. The outer and upper edge of this form -is of the shape to which the piece of wood is desired to conform at the rst bending. In use, this form (which may be of any suitable material) is rst laid tlat, and the piece of wood B, previously made pliable by steam or hot water, is bent around it in the ordinary way, and held in place by clamps C C C; or the wood may first be bent around a separate form, and then transferred to the ilexible form, and fastened to it. The flexible form, with the heut wood fastened to it, is now itselt bent around a secondary form of desired shape by the application of suitable pressure. This is made possible by the hinges, joints, or links between A A A. A. yThe metallic strap S is also jointed at a a a, so that it also may conform to the curvature of the secondary form. By this operation, the piece of wood B which was previously bent is now bent again lin a new direction, and the combined effect of the two curves is to produce a chair-rim ofthe most desirable shape and the greatest attainable strength, with the greatest economy of material; and, by the use ot' the flexible form, the symmetry ot the rim or other piece of wood is preserved during the second process of bending.

In the drawings, Figure l represents theI form and wooden rim B in the shapeV given them after the process ot' double bending is completed, and Fig. 2 is a top-edge view ofthe same.

I claim as my inventionv -A yielding or ileXible form for bending wood, which may be bent or made to conform to a secondary form, for the purpose of bending again a previously-bent piece of wood which is secured to it, substantially as herein specified.

JAEEZ M. WATERS.

`Vit11essesz CHARLES H. SMITH, J EREMIAH F. TwoHIG. 

